no. 1
Configuration space properties of the scattering operator and time delay for potentials decaying like |χ| -α ,α>1
Annales de l'I.H.P. Physique théorique, Tome 57 (1992) no. 1, pp. 89-113. 
@article{AIHPA_1992__57_1_89_0,
     author = {Mohapatra, A. and Sinha, Kalyan B. and Amrein, W. O.},
     title = {Configuration space properties of the scattering operator and time delay for potentials decaying like $\vert \chi \vert ^{-\alpha }, \, \alpha > 1$},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {89--113},
     publisher = {Gauthier-Villars},
     volume = {57},
     number = {1},
     year = {1992},
     zbl = {0776.35043},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1992__57_1_89_0/}
}
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Mohapatra, A.; Sinha, Kalyan B.; Amrein, W. O. Configuration space properties of the scattering operator and time delay for potentials decaying like $\vert \chi \vert ^{-\alpha }, \, \alpha > 1$. Annales de l'I.H.P. Physique théorique, Tome 57 (1992) no. 1, pp. 89-113. http://archive.numdam.org/item/AIHPA_1992__57_1_89_0/

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